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0. H. GOE'TZ.

AUTOMOBILE BUMPER. APPLICATION FILED was, 1921.

Patented Oct 25, 1921.

' UNITED s'nmszs PATENT OFFICE.

OSCAR GOE'IZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO STEWART-WARNER SPEEDOM- ETER CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF, VIRGINIA.

AUTOMOBILE-BUMPER.

Application filed August 6, 1921.

To all whom it may concern:

Be it known that I, OSCAR H. Gon'rz, a citizen of the United States, having residence in Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Automobile- Bumpers, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved construction of a duplex spring bar bumper for automobiles. It consists in the elements and features of construction shown and described, as indicated in the claims.

In the drawings V Figure 1 is a perspective view of a bumper embodying this invention.

F Fig. 2 1s a section at the line, 2-2, on

The bumper shown in the drawings comprises a duplex spring bar impact member,- that is, one having two transversely extending substantially parallel im act bars, both set vertically edgewise in su stantially the same vertical plane and spaced apart in that plane. Both these bars are reflexed rearward at both ends to form loops, 2, for guarding the vehicle wheel. The two bars are integral throughout the loops, that is, the same piece of that spring bar extends from one of the two side bars around through the loop and back to the other impact bar, the flat spring bar being flexed vertically in the loop portion to merge the lower impact bar into the upper at the inner end of the loop. For convenience and economy in construction, however, the impact member com prising the two bars and the two loops is not made of one piece, but of two pieces, each piece comprising a longer portion of one of the impact bars and a shorter portion of the other andthe loop between them. The two pieces thus identically formed are assembled. 1n relatively reverse position lapping the longer portion of one bar on the shorter portion of the other bar, one lap occurring thus in the upper of the two bars nearer to one of the loop ends, and the other occurring in the lower bar near the other loop end. The pieces are secured together and the two bars are vertically spaced apart by means of Specification of Letters Patent.

Patented Oct. 25, 1921. Serial No. 490,298.

transverse ties which are preferably in the form of two-membered clamps comprising the two parts, 3 and 4, which are applied so as to clamp between them at one end the la of the two impact bar pieces upon each other, and at the other end the adjacent portion of the other impact bar, the two clamped members being thus secured together for such clamping by a bolt, 7. And for economy of construction and convenience of assembling the same bolts, 7, serve as means for securing the impact member as a whole to the supporting arms,8, 8, by which the bumper is attached to the vehicle side bar.

I claim 1. An automobile bumper comprising a duplex impact member consisting of two transversely extending spring bars set vertically edgewise in substantially the same vertical plane and spaced apart in that plane, both said bars being reflexed rearward at both ends to form end loops for guarding the vehicle wheel, the two bars being integral throughout said loops, being flexed vertically to merge with each other at the inner ends of the loops.

2. In the construction defined in claim 1, foregoing, the duplex impact member bein made of two identically formed pieces 0 fiat spring bar comprising a longer portion of one of the two vertically spaced bars, and a shorter portion of the other and one of the end loops between said longer and shorter portion; the two pieces being assembled in relatively reverse position with the longer portion of each lapping the shorter portion of the other, and vertical cross ties securing said two bars and said two pieces together, said cross ties engaging at one end the lap of one bar, and at the other end the adjacent part of the other bar.

3. In the construction defined in claim 1, foregoing, the duplex impact member being made of identically formed pieces of fiat ,Spring bar, comprising a longer portion of one of the two vertically spaced bars, and a shorter portion of the other and one of the end loops between said longer and shorter portions; the two pieces being assembled in relatively reverse position with the longer portion of each lapping the shorter portion of the other, vertically-extending clamps for securing the two pieces together and securand bumper-supporting arms secured by ing the two bars in vertically spaced relathe same bolts to the clamps respectively. tion, comprising each two clamp members In testimony whereof, I have hereunto set 10 which at one end engage the lapped ends of my hand at Chicago, Illinois, this 2nd day one bar and at the other engage the adjaof August, 1921.

cent part of the other bar; a bolt which clamps the two clamp members together, OSCAR H. GOETZ. 

